Suction device



' Aug. 19, 193C. I

c. E. RAYMOND SUCTION DEVICE Filed Sept. 14, 19,29

; e fr Patented Aug. .19,'1'e3e A A' l dit i ijifi 498-- i VThis invention relates toenovel suction de` obtain a firm edh'esion of the .Pd to thevtopl yVice' for rdatechinent to, an :engine piston rfor of the engine 'pistonif perfect vseetltkig pre'-A` the `purpose of erking the piston in its cylin- 4Vent Subsequent leakage `of air into the clienider',v to ascertain Whether'there is any looeeber may be obtained by wetting' ythe lightly L. ness of thef, Wrist-pin, erauik-pinV or ergmkf concave snra'ce'witliWater, jnstpriorto shaft bearings,}or any lateral pla-y ot the pisthe. applicationof the pecl to the engine pis? A t0n 4in its Cylinder t tor n. the 'example Sherrie, .the "Cylinder n The invention will be best understood by heedQi conveniently secured to the cylinder Y reference to tliefollowingdescription, ilien` bye screw-thread The other cylinder lo taken injconn'eetion with the accompanying heed 7 need notlhesecuredto rthe cylinder, no, drawings of one specific embodiment thereof, but is' provided with a, leterfagllyl projecting While' ite scope kwill .be more particularly fiange"16,' restingfupontli'e adjgicent end oi p intedV out the'ap'pendedcleirnsl ,Y the oylinderdto prevent A*the cylinder. h ea j1VL Y 11i the difewieeslvzfrm; moving llwefdlyfqbeymldfit Propet 1 5, f Figffljis a, oentreL-longitudinel, sect-ioniil` position.v

V'eWiOfeSimtondev embodymgthemvenr "ThepStQe G iS prqvded' 'with Suite-ble. tion; 'and ,meenshefemmappedleefhe'r'washer'l?,find' engine'iviththe Suction rdeviceietteolied to the egeot' air Afrom;the Aupper-fportion, of the cyl# 2o pistoninireadinesforconducting"a test. inderinto the'cheminbei."ilV Herein, the' heath- '70` Referring tov the drawings, rnd tothe emr-r er Washer is clamped iiirplace on the piston rhodirnent'of tlieinvention Which'is illustrated by a nut 19, screwed onto abosrs 2Ql presented l therein,}thife is-sl-ho'wn a suction vdevice coin-V vby thepistomagndfthis mit is provided with prisingrneans presenting a Chamber 3, hevcirenlnferenielj"groove 2l, to receiveV the nga'vebl@ aiiwracty, 'anden-@Seine 4l .Spring rlle S11 i1 j f ledin'g intoosiaid ohapmber1- In the einhodi- By'jlnovingtlie piston toward the opening. '11121.16lhitratednihdrwneeblw chamber 4;, theSZ@ Oft-hechahbf is reduced, @lid is orined byecylinder @haring piston 6 is expelledtherefrom. The. Working face of Workingthereingy Thel cylinder has et one theisuction devicegis'thenapplied totheob- 3U ende` cylinder heed y7 ,presenting rpiston-'rod ject to bemenip'nlatedg'ond the piston Gis en guide 8,*loos'elyllitt`edto,allow the escape of non( moved in the L opposite*direct-ion (herein airb tweenthe rod andtthegnideend at its in mfairdly),y to increase the capacity of the lofprevent defo nationoit ing olded ondnd'-aileittheflange?.4 ieroingffmeal .ineorporated'ffinthewpedh r lends theretoa'euieientrigidity toprevent -"liliisifis"convenienti c'eo'mplihed im deformation. of 'thepad;Wliile/stilltking presentV `ege-ir-lple byvprovldingfthe "Q'ssd CTA Y the lower end of the spring are screwed, While the upper end of the spring is secured to the upper cylinder head in a similar manner, by providing the cylinder head with a boss 26 threaded to receive several turns ofthe upper end of the spring. To prevent any possible injury to the spring which would result from rotation of the piston by the piston rod, the latter is attached to the former by a swivel Connection, herein conveniently made by providing the boss 2O with a cylindrical'bore 27, which loosely receives a head 28 presented by the lower end of the piston rod. Afterthe head has been inserted, the upper end of the boss is flanged inwardly, asat 29, about aneck 30 presented by the piston rod. If, now, the user should rotate the piston-rod, the piston is not thereby rotated, and no injury to the spring can result.

In l, the spring is'shown elongated, or

I stretched from its normal, closed position by the downward thrust of the piston rod. This is accomplished by placing the pad onthe object to be manipulated, and then pushing the piston rod downwardly to expel air from the chamber 3. through the opening 4, and outwardly along the concave surface 12, which is against the object. VThe Vpressure -of the hand is then removed from the handle 23, and the spring, being no longerrestrained,

Y exerts an upward -pull on the piston and I. tempting tovfje'rk `the piston laterally.

elevates the latter. y Usually, the piston will rise several inches inthe cylindenfbut the latter is made long enough and the spring is made of such length that the piston could ascend still further under the inliuence o1 the spring, were it not for the reduction of the air pressure in the suction chamber. 3. Inv

`other words, the spring from then on constantly tends to increase the sizeof the suction chamber, and thereby to rareiiythe air in the chamber. The suction is so powerful that tremendous pressure would be required to detach the device from the object Yby exerting an upward pull on the cylinder. l

In Fig. 2, there is s hown a portion of an engine comprising a cylinder 3l, having' a piston 32 working therein, and connected to a crank-pin 33 by a connecting rod 34 anda wrist-pin 35. To test the engine for possible Y looseness, the suction deviceis appliedtothe upper face of the engine piston in the described manner, andthe cylinder 5 of the suction deviceis then firmly grasped bythe hand or hands of the user.v Byattemptingto jerk the piston up and down, any undue looseness in. the bearings can be felt.instantly,and the necessaryY adjustment ca-nbe made, by. removal orthe lower part of theenglne crank-case.

VItthere isnonndue play, yremoval of the lower part of ,the crank-case is unnecessary, and much labor and expenseareavoided rIhe device can also lee-used `for-testing the by etpiston for loosenessin the cylinder,

through said guide, anda spring yieldingly resisting movement of said piston toward the second-mentioned cylinder head.

2. In a suction device, the combination of a cylinder having at one end a cylinder head presenting a piston-rod guide and at the other end a cylinder head presenting a pad and having an kopening communicating with the interior of said cylinder, a piston working in said cylinder, a piston-rod` extending through said-guide, anda spring attached at one end to the first-mentioned Ycylinder head and at the other end to said piston and yielding-ly resisting movement of said piston towardY the second-mentioned vcylinder head.

3. In a suction device, the combination of a cylinder having at onel end a cylinder head presenting a piston-rod guide anda threadedboss and at the .other end a cylinder head presenting a. pad and having an opening.;l comnunicating with the interior of saidy cylinder, a piston working in said cylinder and presenting a threaded boss, a piston rod-eX- tending through said guide, and aihelicallycoiled spring about said piston rod and having atits ends turns which are screwed onto the threads of said bosses, said spring yieldingly resisting movement of said piston towardthe second-mentioned cylinder head.v

1l. In a suction device, the combination of a cylinder having at one end a cylinder head presenting -a piston-rod guide and a. threaded boss and at-the other end a cylinder head presentinga pad and .having an'- opening communicating with the interior oivsaid'cylinder, a piston. working in said cylinder and presentlng a threaded boss, a piston rod having swivelled connection with said piston extending through said guide, and a helically coiled spring about said piston. rod and having at its ends turns whichare screwed onto the threads of said bosses, said spring yieldingly resisting Vmovement of said piston vtoward the second-mentioned cylinder head-. ff 5. In a suction device the combination of a cylinder havingat oneenda relativelythinV 6.1 'In' a suctionY device,"the combnationof'a ULi cylinder having at one end a pad having' an opening communicating with the interior of said e luider, a'plston bodily slldahle in sald cylinc er, said piston having a swivel cnneetion with its piston head, and resilient means for resisting the movement ef toward said Opening.

'- in a suction device, the combination 0l said piston l. meansy presenting an expansible and Contraetlble chamber, a relatively thlnand 1nsaid pad having a slight ypermanent eencavity, which when applied t0 the suri'aee of an object Laffords a sustainmg Contact sul` face adapted to be flexed'clovvnvvardly so that said Contact surface is substantially coextensive with the area of the pad. l

In testimony whereof, I have signed my name to this specification.

CHARLES E. RAYMOND. 

